My golden roles and so does the older dog, but the GSD does not. I have never seen her roll in the grass, walk in the mud, or go through a puddle. She is 14 months and has had 3 baths since I got her, she is never dirty or smelly. The other two always have stuff stuck in their fur.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD